How can I force clients to refresh JavaScript files?

Question

We are currently working in a private beta and so are still in the process of making fairly rapid changes, although obviously as usage is starting to ramp up, we will be slo

Answer 1

How about adding the filesize as a load parameter?

So every time you update the file the "filever" parameter changes.

How about when you update the file and your update results in the same file size? what are the odds?